Vehicle-jack.



PATENTED AUG. 21, 1906.

W. H. HAMPSON.

VEHICLE JACK.

APPLICATION FILED DIKLZ, 190s.

witness es 35 jack and wheel in fine dotted lines moved for- UNITEDSTATES PATENT oEEIoE.

Specification of Letters Patent.

Application filed December 2, 1905. Serial No. 289,960.

Patented Aug. 21, 1906.

power-vehicle raised so that the tires of the wheels of said vehicleshall not rest upon the ground or floor when said vehicle is in thegarage.

The objection to the vehicles standing u on the tires for any length oftime is that t e tire becomes flattened at the portion thereof incontact with the ground or floor after a certain period of time, andespecially is this the case where the neumatic tire becomes artiallydeflated, m which case the tire ishable to become cracked or injured bythe rim of the wheel.

The invention consists in the combination and arrangement of parts setforth in the following specification and particularly pointed out in theclaimsthereof.

Referring to the drawings, Figure 1 is a side elevation of one form ofmy improved.

vehicle-jack. Fig. 2 is a vertical section of another form of minvention, showing a portion of the vehic e-wheel in broken lines raisedfrom the ground and also showing the ward with the periphery of thewheel just coming Into contact with the floor. Fig. 3 is a section takenon line 3 3 of Fig. 2.

Like numerals refer to like; parts throughout the several views of thedrawings.

In the drawin s, refe to Fig. 1, 5 is a jack consisting of astandar 6,having a base 7-, the bottom surface 8 of said standard being convexlycurved and preferably having a portion of said bottom surface flattened,as at 9. The top of the standard 6 is preferably provided with a recess10.

' The manner of operation of the jack hereinbefore specificallydescribed is as follows: Four jacks are used, two under each axle of Ithe vehicle, and said jacks may be placed beneath said axles either byraising the axle with a jack and placing m improved jack thereunder,with the axle Fig. 1, located in the recess 10 and the jack intheposition illustrated in dotted lines, Fig. 1, an hicle 1pushed towardthe left until the jacks indicated in said Fig. 1, with the flat spot 9resting upon the ground or floor, or the acksmay be laced beneath theaxle, as shown in dotted lines, Fig. 1, and the vehicle ushed toward theleft in said Fig. 1' until tl iejack assumes the position shown in fulllines in said figure, rocking on its curved bottom surface from oneposition to the other until it finally assumes the position shown inFig.1-

and rests upon the flattened portion 9 ofsaid curved surface. Thus whenfour jacks are used in the manner last described the vehicle may beraised, together with the wheels thereof, fromthe ground or floor sothat the tires do not rest u on the floor. It will also be seen that intile position of the vehicle first described the tires of the'wheel donot contact with the floor. When it is desired to use the vehicle, thesame is pushed forward or backward, as may be desired, and the differentjacks will rock upon the curved bottom surfaces 8 thereof until the perihery. of the tire of each wheel rests upon t e floor. The jacks are thenremoved, and the vehicle is ready for use. i

When it is desired to raise the vehicle upon the jacks, and thus removethe tires from the floor, the four jacks are set in the (position theverock om the position shown in dotted lines to-the position shown infull lines in said Fig. 1. The rocking of the jacks u .on them curvedbottom surfaces 8 raises t e vehicle and the, four wheels thereof fromthe ground until the wheels are in the position illustrated by brokenlines, Fig. 1, with the tires Eemoved from contact wlth the ground oroor.

In Fig. 2 a modified form of my invention is illustrated in which thejack 5' Is formed in two parts-via, a standard 6 and a holder 11. Theholder 11 is adjustable longitudinally of said standard and has a recess10 in the top thereof. Said holder is rectangular in cross-section anextends downwardly into a correspondingly-shaped recess or hole 1.2,formed in the standard 6'. The holder 11 has formed upon its oppositesides teeth 13, which engage awls 14, pivoted at 15 to the standard 6' Tese pawls serve to lock the holder a ainst downward motion with relationto sai standard 6. The base 7 of the standard 6' has a convexedly-curvedbottom surface 8, preferably provided with a flat portion 9', thesurface 8" being corru- (preferably gated to prevent slipping. The axleA of the vehicle to be supported rests in the recess 10', and the 0eration of moving the vethat the second form permits of adjustment inlength of the jack by movin the holder 1 1 upwardly or downwardly in t estandard 6 and then looking it against further downward motion by meansof the pawls 14. The object of the flattened portions 9 and 9 of thebottom surfaces of my improved jack in the forms hereinbefore describedis to hold said jack and also the vehicle supported thereby in astationary position until sufficient force is exerted upon the vehicleto rock the 'ack onto its curved bottom surface and off 0 said flattenedportion.

It will be seen that the advantages derived from the use of my improvedjack are the almost instantaneous removal of the vehicle from the jacksand also a like instantaneous operation in the raising of the fourwheels of the vehicle from the ound, and a further advanta e resides int e fact that the device is one o extreme simplicity, strength, andcheapness.

My improved jack is weighted at one side of the median vertical planethereof, so that in its normal position the jack may stand with thestandard 6 or 6 at an angle to the floor upon which said jack rests inorder thatwhen the different jacks are placed in position for thevehicle to be raised from the floor they willall stand at an angle, andthe vehicle being pushed against them the axles will con tact with thedepressed portion at the upper end of the standard, and y furtherpushing of the vehicle the four jacks will rock upon their bases and thevehicle be raised, so that the tires will not touch the floor or ground.

In the form of invention illustrated in Fig. 1 the portion 16 forms theweight hereinbefore referred to, and in Fig. 2 the portion 16constitutes the weight by which the jackis held tipped at an angle. Itwill be noted that in the form of my invention illustrated in Fig. 1 theflat spot 9 is located between two convexly-curved surfaces 8 8, whilein the form of my invention illustrated in Fig. 2

the flat spot 9 extends over somewhat more.

than one-half of the bottom surface of the jack, while the curvedsurface 8 extends over the remaining portion of said bottom surface; butthe operation of the jack in both cases is substantially the same, theonl difference bein that in the form illustrate in Fig. 1 the jac can berocked in either direction and is therefore a right and left jack, whilein the form illustrated in Fig. 2 the jack can vex only be rocked in onedirection away from the fiat spot 9.

Having thus described my invention, What I claim, and desire by LettersPatent to secure, is 4 1. A vehicle-jack com rising a standard adaptedto sup ort a ve 'ele and-having a convexly-curve bottom surface, aortion of which surface is flattened, where y said jack may be rocked,together with said vehi: cle, said jack being weighted at one side ofits median vertical plane, whereby the same stands normally in positionto receive the axle of said vehicle when the wheels thereof are incontact with the floor.

2. A vehicle-jack comprising a standard having a recess in the topthereof adapted to receive the axle of a vehicle, the bottom surface ofsaid jack formed on a convex curve, whereby said jack may be rockedtogether with said vehicle, said jack being weighted at one side of itsmedian verticalplane, whereby the same stands normally in position toreceive the axle of said vehicle when the wheels thereof are in contactwith the floor.

3. In a vehiclejack, a standard having a convexly-curved bottom surfaceand a holder adjustable longitudinally of said standard and adapted tosupport a vehicle, whereby said jack may be rocked to ether with saidvehicle, said jack bein weig ted at one side of its median verticaplane, whereby the same stands normally in position to receive the axleof said vehiclewhen the wheels thereof are in contact with the floor.

4. In a vehicle-jack, a standard having a convexly-curved bottomsurface, a portion of which surface is flattened, and a holder ad-'justable longitudinally of said standard, said holder having a recess inthe top thereof adapted to receive the; axle of a vehicle, whereby saidjack may be rocked, together with said vehicle, said jack being weightedat one side of its median vertical plane, whereby the'same standsnormally in position to receive the axle of said vehicle when the wheelsthereof are in contact with the floor.

5. A vehicle-jack comprising a standard ada ted to support a vehicle andhaving a conl -curved bottom surface, whereby sald jack may be rockedtogether with said vehicle, said jack being weighted at one side of itsmedian vertical plane whereby the same stands normally in position toreceive the axle of said vehicle when the wheels thereof are in contactwith the floor.

In testimony whereof I have hereunto set my hand in presence of twosubscribing w1tnesses.

WILLIAM H, HAMPSON.

Witnesses OnARLEs S. Goonme, ANNIE J. DAILEY.

